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| author | Eduardo Otubo <otubo@redhat.com> | 2017-03-13 22:13:27 +0100 |
|---|---|---|
| committer | Eduardo Otubo <otubo@redhat.com> | 2017-09-15 10:15:06 +0200 |
| commit | 73a1e647256b09734ce64ef7a6001a0db03f7106 (patch) | |
| tree | 522eda09d8df57747caf6acc9ecd4b3a61e4ecc3 /qemu-seccomp.c | |
| parent | 2b716fa6d63a183a42b789595c3944f53c0ded7c (diff) | |
| download | qemu-73a1e647256b09734ce64ef7a6001a0db03f7106.zip qemu-73a1e647256b09734ce64ef7a6001a0db03f7106.tar.gz qemu-73a1e647256b09734ce64ef7a6001a0db03f7106.tar.bz2 | |
seccomp: add elevateprivileges argument to command line
This patch introduces the new argument
[,elevateprivileges=allow|deny|children] to the `-sandbox on'. It allows
or denies Qemu process to elevate its privileges by blacklisting all
set*uid|gid system calls. The 'children' option will let forks and
execves run unprivileged.
Signed-off-by: Eduardo Otubo <otubo@redhat.com>
Diffstat (limited to 'qemu-seccomp.c')
| -rw-r--r-- | qemu-seccomp.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/qemu-seccomp.c b/qemu-seccomp.c index 8a5fbd2..978d66b 100644 --- a/qemu-seccomp.c +++ b/qemu-seccomp.c @@ -67,6 +67,17 @@ static const struct QemuSeccompSyscall blacklist[] = { { SCMP_SYS(sysfs), QEMU_SECCOMP_SET_OBSOLETE }, { SCMP_SYS(uselib), QEMU_SECCOMP_SET_OBSOLETE }, { SCMP_SYS(ustat), QEMU_SECCOMP_SET_OBSOLETE }, + /* privileged */ + { SCMP_SYS(setuid), QEMU_SECCOMP_SET_PRIVILEGED }, + { SCMP_SYS(setgid), QEMU_SECCOMP_SET_PRIVILEGED }, + { SCMP_SYS(setpgid), QEMU_SECCOMP_SET_PRIVILEGED }, + { SCMP_SYS(setsid), QEMU_SECCOMP_SET_PRIVILEGED }, + { SCMP_SYS(setreuid), QEMU_SECCOMP_SET_PRIVILEGED }, + { SCMP_SYS(setregid), QEMU_SECCOMP_SET_PRIVILEGED }, + { SCMP_SYS(setresuid), QEMU_SECCOMP_SET_PRIVILEGED }, + { SCMP_SYS(setresgid), QEMU_SECCOMP_SET_PRIVILEGED }, + { SCMP_SYS(setfsuid), QEMU_SECCOMP_SET_PRIVILEGED }, + { SCMP_SYS(setfsgid), QEMU_SECCOMP_SET_PRIVILEGED }, }; |